Dirt-proof bearing



J. E. HOY AND R. P. PLACE- DIRT'PROOF BEARING.

APPLICATION FILED MAR. 7. 191a. RENEWED MAY 16.1919.

1,314,748. PatentedSept. 2, 1919.

THB COLUMBIA PLANOORAPN c0-. WASHINGTOV D c STATES PATENT onn o z.

JOHN E. H071 AND ROLAND P. PLACE, or DETROIT, MICHIGAN.

DIRT-PROOF BEARING.

Specification of Letters Patent. P t t d t, 2, 1919,

Application filed March 7, 1918-, Serial No. 220,976. Renewed May 16, 1919. Serial No. 297,561.

To all wu riom i tma' concern:

' Be itilniown that'we, JOHN E. Her and Romano P. PLAoE, citizens of the United States, and-residing at Detroit, county of Wayne, and State: of Michigan, have invented a new and Improved Dirt-Proof Bearing,

' of which the following is a specification.

The present invention has reference to a hearing construction, and in the embodiment shown is applied to a grinding wheel dresser which, asidefrom'the bearing and lubricating" features, forms the subject matter of our application'i' or United States Letters Patent Serial Number 22097 5 filed Mar. 7, 1918.

The main object is to form an efficient and inexpensive bearing capable of excluding particles of emery dust or other foreign matter from the-bearing surfaces. Another obj ectis to provide'a bearing wherein the compressible packing materialis' relieved from contact with the end faces of the rotatable element,thus eliminatin the tendency to tear the packing apart wlri'chis responsible for the short life thereof in ordinary constri' ctions. j V

. In attaining these and other objects the nature ofwh-ich will'appear later, the invention consists in a non-rotatable metalfaced packing interposed between the end face of the rotatable element and an adj acent face'of the spindle or shaft whereon the element turns. It further consists in a bushing interposed between the spindle or shaft and the rotatable element and non-rotatablein respect to the former, together with a compressible metal faced packing held from rotation by the bushing and bearing on enveloping portion of the rotatable memberto form a tight seal. It also consistsin a non-rotatable slotted bushing receiving a projection on a washer whereby the face of the packing is protected and serving to prevent'rotation ofthe washer. Again, it consists in a pair of non-rotatable interposed washers seated in the end of the rotatable member and having between them a compressible felt-like material which may be pressed outwardly into sealing relation with the adjacent inner surface of the rotatable member- It further'consists in the details of construction shown, describedand claimed. 1

In-the'dra-Wings, Figures 1 and 2 are respectively an end view and-a side view of the tool. Fig. 3 is a central longitudinal section corresponding to Fig. 2. Fig. 4 is a side View of the spindle. Figs. 5 and 6 are, re spectively, a side View and an end of the bushing. Fig. 7 is an end view of a housing element whereby the sealing means isin closed. Fig. 8 is a side view of one of the washers of the sealing means.

The cutter or abrading'wheel, which constitutes the working element of the device shown, includes a series of thin toothed'metal disks 1 arranged end to end on a metal spool or tube 2 the ends of the latter of which are received in cup-shaped housing members 3.

By pressing the extremeends of the tube over into the cups to form flanges 16, the outer faces of which are perpendicular to the axis of the cutter, the disks, the spool and the housing membersare secured firmly together and are constrained to turn as a unit. Various other rotatable elements may be substituted therefor, that is, the bearing features hereinafter described are not limited to use in connection with a grinding wheel dresser but'are of general application.

In the embodiment of the invention shown, the rotatable element is mounted on a spindle which includes an end portion 11 and a body portion 12 between which an annular shoulder 13 is formed, this shoulder being of less diameter than the internal. diameter of the adjacent member 3 and the portion 12 has a pin 14 projecting therefrom near the shoulder; Surrounding the portion 12 is a tubular bushing '15 (Fig. 5) the ends of which are slotted at 17 and 18, one pair of slots preferably being in a plane at right angles to the plane of the other pair, and it will be seen (Fig. 3) thatthe pin is received in one' of the slots 17 ,1 thus holding the bushlent, but'the friction of the flanges 16 there on would soon tear the materialto pieces.

It is therefore preferred to use atieach'end' pressible material 23 is received. These" a pair; of thin metal washers 22 between which thefelt or other relativelysoft com Washers each include'aninwardly extending projection 24 (Fig. 8) those on theend nearest the shoulder being received in the; slot 17 other than that into which the pin projects. At the opposite end the projections may be receivedin either one or the other or both of the slots 18, and it is evident that one of-the slots.18 might be omitted :It is also; evident thata somewhat similar action, in so far as protecting the packing .is concerned, would take place werethei projections 24 omltted from those washerswhich are farthest from the flanges 16, but the latter construction is not desirable since the washers referred to' F might then be carried around by the housing members-3.. When'all the washers are held 7 from rotation,-either as shown or in an equivalent manner, relative movement "takes placealong the faces ofth'efianges 16, and the packing is forced outwardly into close sealing relation to the inner. surfaces of the cups 3' asthe nuts 21, are tightened." A slight clearance is provided between the washer 20 and the bushing to allow for adjustment.

Inithe' wheel; dressing" tool shown, the

I endportion-lief the spindle is pressedv into V handle 28. H'owever',it-wi-1l be'understood' that the invention is not limited to a con:

a bore-in the end walll26 of a housing 25,, and thelatter is carried inatoolpost (not shown), orin theghand, by means. of; the

shaft is 1 sages 31 and 32. Y The outerend of thechamthe BildYWlll of the housing.

ber is provided with ZLcSQI'GW plug 33. V'Lubricating'fluid isisupplied to the chamber through a lateral passage34 from an ordi- I nary grease cup 35 which is "threaded into compression screw 36 of the 'cupis turned, suflicient pressure'is appliedv to the fluid. to cause it to tend to work out between the packing and the innerlsurfacesfof the elements thus preventing the entrance of any particles of foreign matter that may collect around the endof said elements.

1 The details of construction are subject to considerable variation. otherwise than as stated and we do not wish, therefore, to be' limited except as indicated'by the claims. We claim: g'

1.1 In a dirt'proof bearing," a shaft having'a shoulder,- a member rotatable on the When f the surface of the washer, and

shaft, a longitudinally slidable washer able materialinterposed' between the washer and the shoulder, saidrotatable member overlapping the washer "andthe packing 'terposed between the. member and the shoul- I i der and'secured against rotatingin respect to the shaft, a,packingoficompressibleflexi- I nd fi ting lclo'selyto the latter on the outer T surface thereof.

2 2. In. a dirt proof bearing, shaft, a bushing "secured against rotation on the shaft, a member rotatable on the bushing,

a' metal washer surrounding the bushing and interposed betweenthe rotatable mem' i ber andthe shaft, said-.washertbeing,slid

able along'the bushingbut non-rotatable in j respect thereto, a packing 'of soft flexible I material interposedbetween the washer and the shaft,.said rotatable: member overlapping the washer and the packing] and forme ing a tight seal withthe latter. l

- 3. In a dirt/proof 1 bearingya shaft, a member rotatable thereon, said member hav i.

ing an'end face substantially perpendicular to-the axisyof the shaft. and the shaft, haveing a .corresponding'face adjacent'saidlfirst named face, a packing ofco npressible ma-i terial interposed between; said faces, and a 51;: washer fixed against, rotation and .inter posed between the packingand-the end face of the rotatable member, thejrotatablememl ber 'overlapping the washer and the pa k: T

ing to form a tight joint.

, 4.1 In a dirt proofibearing a, shaft, I i H w1.0 0 mg an outturned endaflange 'presenting .-an 1 tubular member rotatable thereon and hav-i annular end face, a cup-shaped member 'in-rclosing the" outturned flange, a compresslble' r packingelement havingametal protecting washer on the side thereof nextrto the' end face of theflange, .said'washer' beingslidv able but non-rotatable onthe shaft, the cupshaped member overlapping the washer and f the packing element. to form -therewith-a" sealedjoint. i V 5.'In a dirt proof bearing, a shaft, a

member rotatable thereon, a washer of hard material slidable longitudinally of and} Se.-

cured against rotation in respect to the shaft and fittin against the rotatable member, a

com-pressi 1e packing'forthe-washer on the side thereof most remote fromthe-rotatable member, and means overlapping the washer i and packing to forma tight joi t f eluding dirt, V

6. vIn a dirt proof bearing, a shaft, atubu; I

lar element rotatable in; respect to theshaft,

V a metal washer interposed 'betweenan" end surface of the element and the; shaft, {and j fixed against rotation in respect to theshaft,

v a compressiblepacking;for the washer, said rotatable element. conformingtothe outer .7 packing to "form therewlth aitlght' jO1I1t., 7. In a bearing construction, a shaft, 5 a

tubular member rotatable thereon, said cup-shaped bearing housing in which the member including an outwardly turned end end of the tubular element is received, said 10 flange, a cup-shaped bearing housing in element and said housing being rigid one Whichsaid flange is received, and a bearwith the other, and a bearing within said 5 inlg Igvithin said housing and protected housing and protected thereby.

t ere y;

8. In a bearing construction, a shaft, a JOHN E. HOY.

tubular element rotatable about the shaft, a ROLAND P. PLACE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

